@article{Katsidoniotaki_Yu_Göteman_2022, title={Midfidelity model verification for a point-absorbing wave energy converter with linear power take-off}, volume={5}, url={https://marineenergyjournal.org/imej/article/view/102}, DOI={10.36688/imej.5.67-75}, abstractNote={<p>In the preliminary design stage of a wave<br>energy converter (WEC), researchers need fast and reliable<br>simulation tools. High-fidelity numerical models are usu-<br>ally employed to study the wave-structure interaction, but<br>the computational cost is demanding. As an alternative,<br>midfidelity models can provide simulations in the order of<br>real time. In this study, we operate Uppsala University’s<br>WEC in a relatively mild sea state and model it using<br>WEC-Sim. The model is verified based on OpenFOAM<br>simulations. To analyze the ability of the midfidelity<br>model to capture WEC dynamics, we investigate the system<br>separately with 1, 2, and 3 degrees of freedom. We examine<br>the contribution of viscous phenomena, and study both<br>linear and weakly nonlinear solutions provided by WEC-<br>Sim. Our results indicate that the viscous effects can be<br>neglected in heave and surge motion, but not for pitch.<br>We also find that the weakly nonlinear WEC-Sim solution<br>successfully agrees with the computational fluid dynam-<br>ics, whereas the linear solution could suggest misleading<br>results.</p>}, number={1}, journal={International Marine Energy Journal}, author={Katsidoniotaki, Eirini and Yu, Yi-Hsiang and Göteman, Malin}, year={2022}, month={Jun.}, pages={67–75} }